S&B 8ply Power Stack Air Filter - Black Rubber Cap, 3.50" Inlet, 5.00" Length, Red Element Item ID: SBPSR-350-500-RED Size (spec): 3.50" Material (spec): 8-Ply Cotton-gauze Dimensions (spec): 3.50" Outlet ID x 5.25" Cone OD x 5" Filter Height (spec): 5.00"